Defeating the oozaru's is one of the hardest parts in the game, there isn't really a strategy that works for everyone here so it's best to just L1 lock off as much as you can and run away, dodge his blasts and rarely attack. just don't let him get in melee range.

it depends on which oozaru your talkin about gohan or vegeta,for fightin gohan your piccolo the way I defeated him was by when the match first starts do a destructive wave then he will fall down quickly charge up and then do it again,if you have enough ki energy do a special beam cannon it will take more damage,repeat this over and over and you will win,for vegeta oozaru you have to survive,wat I did was just keep hittin him with a charged up ki blast and he will automatically fall down just repeat that and the time will run out,he might deflect the ki blast back so be ready to delfect it,also for a easy win get in a far flyin distance as you throw the blast at him,its easyier because he will have to charge up at you and you will have enough time to throw a charged ki blast at him and he will fall just repeat this and you will win trust me it works

well for the gohan oozaru i just got away charged and did special beam cannon over and over. next for the vegeta oozaru i just flew back charged and hit him with kamehameha the flew to him and did square,square,square and x over and over hoped he didnt block good luck

ok who ever u use facing the monkey use only energy attacks but stay far away from him. do not use physical attacks they dont work just use energy attacks and kamamaha attack or there main energy attck to keep him down and away it will work i did it facing all the monkeys i had to battle.